- Dr Paolo Barone, Clinica Neurologica, Ed 17, Department of Neurological Sciences, Via S Pansini 5, 80131 Napoli, Italy. Telephone-fax 0039 81 7462670; email:
- Received April 10, 1998
- Revised July 7, 1998
- Accepted August 10, 1998
- First published January 1, 1999.
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